package com.yz.xyt.config;

import com.yz.xyt.filter.JwtAuthenticationTokenFilter;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.AuthenticationEntryPoint;
import org.springframework.security.web.access.AccessDeniedHandler;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

/**
 * security 配置类
 *
 * EnableGlobalMethodSecurity 开启权限注解
 * EnableGlobalMethodSecurity设置为true时，PreAuthorize注解才能生效
 */
@Configuration
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    //创建BCryptPasswordEncoder注入容器
    @Bean
    public PasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }

    @Bean
    @Override
    public AuthenticationManager authenticationManagerBean() throws Exception {
        return super.authenticationManagerBean();
    }


    @Autowired
    private JwtAuthenticationTokenFilter jwtAuthenticationTokenFilter;

    @Autowired
    private AuthenticationEntryPoint authenticationEntryPoint;

    @Autowired
    private AccessDeniedHandler accessDeniedHandler;

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
                //关闭csrf
                .csrf().disable()
                //不通过session获取securityContext
                .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS)
                .and()
                .authorizeRequests()
                //放过登录接口，允许匿名访问
                .antMatchers("/user/login").anonymous()
                .antMatchers("/leave/img").anonymous()
                .antMatchers("/system/getVerifyCode").anonymous()
                .antMatchers("/user/thirdPartyLogin").anonymous()
                .antMatchers("/app/download").anonymous()
                //.antMatchers("/druid/**").anonymous()
                //除开上面的请求其他所有请求都需要认证
                .anyRequest().authenticated();
        //添加认证过滤器
        http.addFilterBefore(jwtAuthenticationTokenFilter, UsernamePasswordAuthenticationFilter.class);
        //配置异常处理器
        http.exceptionHandling()
                //配置认证失败异常处理器
                .authenticationEntryPoint(authenticationEntryPoint)
                //配置鉴权失败异常处理器
                .accessDeniedHandler(accessDeniedHandler);
        //配置security允许跨域
        http.cors();
    }
}
